Hawks forward Al Horford had a statement game after missing much of the 2011-12 season, finishing with 23 points and 12 rebounds.

Atlanta led for much of the game, but it was a tight contest heading into the game's final frame with the two teams just one point apart. That's when Lou Williams took over.

Williams scored 10 of his 19 points in the fourth quarter and showed off his clutch gene in the process. He was a major cog in the Hawks' 12-4 run that helped them snatch the game out of Oklahoma City's grasp.

No Josh Smith? No problem. Williams, Horford and company had little trouble replacing their star teammate's scoring touch.

It's not very often that superstar Kevin Durant doesn't lead Thunder in scoring, but tonight was one of those rare occasions. Newly acquired shooting guard Kevin Martin led OKC in scoring with 28 points, despite coming off the bench.

Still, Durant had a strong game, scoring 22 points while adding 12 rebounds and eight assists. He was also just two dimes short of notching his first career triple-double.

Turnovers ended up dooming the Thunder, as the Hawks turned 21 Oklahoma City turnovers into 31 points on the other end.

You have to search far and wide for a statistical advantage by the Thunder in Sunday's contest, but blocks was one of those categories—the Thunder swatted nine shots to the Hawks' one.

OKC will stay home to face the Toronto Raptors on Tuesday night, while the Hawks travel back to Atlanta to play the Pacers on Monday night in a back-to-back.